vmware安装的centos7中没有出现eth0网卡，也没有ip，不能上网，输入ifconfig后如下图

解决办法

1.编辑网卡的配置文件 vi /etc/sysconfig/network-scripts/ifcfg-ens33 将里面的NAME和DEVICE项修改为eth0

1. [root@localhost ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33
2. TYPE=Ethernet
3. BOOTPROTO=static
4. IPADDR= 192.168 .0 .116
5. NETMASK= 255.255 .255 .0
6. GATEWAY= 192.168 .0 .115
7. DNS1= 114.114 .114 .114
8. DNS2= 8.8 .8 .8
9. DEFROUTE=yes
10. PEERDNS=yes
11. PEERROUTES=yes
12. IPV4_FAILURE_FATAL=no
13. IPV6INIT=yes
14. IPV6_AUTOCONF=yes
15. IPV6_DEFROUTE=yes
16. IPV6_PEERDNS=yes
17. IPV6_PEERROUTES=yes
18. IPV6_FAILURE_FATAL=no
19. IPV6_ADDR_GEN_MODE=stable-privacy
20. NAME=eth0
21. UUID= 972a1eb3 -049f -4db2 -80f5 -7d8fd28ef76f
22. DEVICE=eth0
23. ONBOOT=yes

2.重命名网卡配置文件ifcfg-ens33为ifcfg-eth0

1. [root@localhost ~] # cd /etc/sysconfig/network-scripts/
2. [root@localhost network-scripts] # mv ifcfg-ens33 ifcfg-eth0

3.编辑/etc/default/grub并加入“net.ifnames=0 biosdevname=0 ”到GRUBCMDLINELINUX变量

1. [ root@localhost network-scripts] # vi /etc/default/grub
3. GRUB_TIMEOUT= 5
4. GRUB_DISTRIBUTOR= "$(sed 's, release .*$,,g' /etc/system-release)"
5. GRUB_DEFAULT=saved
6. GRUB_DISABLE_SUBMENU= true
7. GRUB_TERMINAL_OUTPUT= "console"
8. GRUB_CMDLINE_LINUX= "crashkernel=auto net.ifnames=0 biosdevname=0 rhgb quiet"
9. GRUB_DISABLE_RECOVERY= "true"

4.运行命令grub2-mkconfig -o /boot/grub2/grub.cfg 来重新生成GRUB配置并更新内核参数。

1. [root@localhost network-scripts] # grub2-mkconfig -o /boot/grub2/grub.cfg
2. Generating grub configuration file ...
3. Found linux image: /boot/vmlinuz- 3.10. 0- 514.el7.x86_64
4. Found initrd image: /boot/initramfs- 3.10. 0- 514.el7.x86_64.img
5. Found linux image: /boot/vmlinuz- 0- rescue-b7f83ca165964a47b8b283907b12614 0
6. Found initrd image: /boot/initramfs- 0- rescue-b7f83ca165964a47b8b283907b12614 0.img
7. done

5.重启系统

[root@localhost network-scripts]# reboot

6.输入ifconfig验证

亲测可行